Apparatus for purifying water.



No. 653,009. Patented luly 3, |900.

. C. H. KOYL.

APPARATUS FOR PURIFYING WATER.

(Application filed Nov. 1, 1899.) (No Model.)

than the bathe-plate d in the first cylinder,

lower end in a hopper-shaped or tapering portion A' and B', forming a sediment-chamber UNITED? STATES i PATENT @einem CHARLES HERSOI-IEL KOYL, OF NEV YORK, N. Y.

APPARATUS FOR P URIFYING WATERI SPECIFICATION forming part of Letters Patent No. 653,009,dated July 3, 1900.

Application filed November l, l 8 9 9 To all whom it may concern: y

Beit known that I, CHARLES Hansel-inn KOYL, a citizen of the United States, residing in the city of New York, in the "county and State of New York, have invented a new and useful Improvement in Apparatus for Purifying Water, of which the following is a specification.

In an application of even date herewith, bearing Serial No. 735,517, I have set forth a process for the purification of Vwater which involves the addition to andmixing with the water of certain named ingredients, preferably ferrous sulphate and sodium hydroxide. The apparatus to which my present application is directed is one intended to secure the accurate addition to and thorough intermingling with the water of these ingredients.

I will first describe the apparatus by reference to the accompanying drawings and will then point out more particularly in the claims v those features ofthe same which I believe to be new and of my own invention.

In the drawings, Figure l is a vertical sec.- tion of the apparatus. Fig. 2 is a plan of the same. Fig-3 is a section on line 3 3, Fig. l.

The apparatus comprises two separate chambers A B, through which the water suecessively passes. In the rst it is thoroughly mingled with one of the ingredients, and in the second it has added to it the other-ingredient. These chambers may be of any suitable material and construction. I prefer that they shall be two cylinders, as shown, placed in Vertical position and side by side, in which position they are supported by any suitable framework. Each chamber terminates at the provided with a discharge-outlet dor b, closed by a suitable draw-off cock, as shown. The two chambers are in communication through an Opening or duct c near their upper ends.

In the chamber A is a vertical partition or battle-plate d, which stops short of the bottom of the chamber, so as to leave at that point an opening through which the compartments into which the chamber is divided by the partition may communicate. There is in chamber B a similar vertical partition or battleplate e. This partition, however, is shorter Serial No. 73 5,518. (No model.)

so as to leave a much larger opening between the two compartments in the chamber B for the purpose hereinafter specified. y

` In the upper part of the chamber A is the inlet fi'or the raw water, and in the upper 'part of the chamber B is the outlet g for the treated water.

chamber A, passes down under the partition CZ, and thence rises in the second compartment y contain one of the ingredients-e. g., sodium hydroxideto be added to the water, and above the other chamber is a like tank D to containthe other ingredient-e. g., ferrous sulphate or other salt which will yield-atloco'ulent precipitate or coagulant. These ingredients are dissolved or in liquid form and are The raw water through the' inlet f enters the first compartment of the to be discharged continuously and inmeasured vquantities into the chambers below.

each tankanozzle h, which discharges into the first compartment of the chamber below in vconnection with which the tank is, used, and to this nozzle is connected a small'rubber yor other iiexible pipe or tube t', to thetop' of which is connected a tioatj, which rests on the surface of the liquid in the tank. The liquid enters the tube through a small opening 7e in the upper portion of the same, located so as to be, say, about an inch below the level of the liquid in the tank, and thence passes down through the tube and nozzle into the first compartment of the chamberA orB below. The float j ,will of course rise and fall with the level of the liquid in the tank, maintaining the opening k always at the 'same depth, the pressure under which the liquid passes down through the tube thus being uniform, notwithstanding variations in height of water in the tank.

Awater with the ingredient.

To insure the thorough and immediate intermingling of the ingredients with thewater to be treated, I make use of the following means: In the upper part ot each waterchamber A or B and in the first compartment therein is located a trough E, over the door of which runs the water that enters the chamber. In this trough and immediately below the nozzle 7L, from which the liquid ingredient drops from the tank C or D above, is journaled a small freely-revolving bucketwheel F, which when the apparatus is in op? eration is kept in constant and rapid rotation by the stream of water which passes over the floor of the trough and meets the buckets of the wheel. At the same time the liquid discharged from the nozzle 7L constantly falls upon the wheel, each bucket of which will carry a dose or' the ingredient to meet and intermingle with the water which strikes the successive buckets. In this way I get thorough and immediate intermingling of the This is further secured during the passage of the-water down through the one compartment and up through the second compartment of each chamber. The water after receiving its dose ot' the tirst ingredient-the sodium hydroxide-passes over into the second chamberB, where it has added to it the second ingredient-e. g., ferrous sulphate (green vitriol)-and the reaction which at once sets in results, among other things, in the production of a tiocculent precipitate which serves as a coagulant in the filtering operation to which the treated water is subsequently subjected.

The partition or baiiie plate e in the chamber B is made quite short, so as to leave a large waterway or opening between the two compartments of that chamber. There is consequently less swirl and movement of water in the lower part of the chamber, and thus the heavier sedimentary matter and solids held in suspension in the water have better opportunity to settle in the conical bottom of the chamber. The deposits inthe sedilnent-receptacles A B can be drawn oft' from time to time as occasion may require.

For many industrial uses-as, for example, in connection with steam-boilers or the likethe supply of water drawn from the apparatus is not continuous, but intermittent, the tlowof water at the point of consumption being cut off from time to time. To prevent the apparatus from overowing at such times, any suitable mechanical expedient can be usedas, for example, the nozzle h-and the waterinlet f can be provided with cocks or valves, which through suitable intermediaries are connected with and operated by a ioat or floats contained in one of the Water-chambers of the apparatus and so arranged that when the water-level rises above normal the valves or cocks will be operated to close. Expedients of this kind, however, are Well known and require no description.

What I claim herein as new, and desire to secure by Letters Patent, is as follows:

l. The combination with .the chambers through which thc water to be treated successively passes, tanks containing the ingredients to be added to lthewater, and dischargenozzles h through which the said ingredients pass into the chambers, of the troughs E'over the floors of which the incoming water suc-V cessively passes, and bucket-wheels F', one in each trough, mounted on. a horizontal axis and arranged so that the ingredients which discharge from `the nozzlesh shall fall uponz. and be caught by the buckets of the wheels water, of the trough E, the bucket-wheel F,

the nozzle h, the flexible tube t' and viloat j, and the tank containing said tube and fioat, under the arrangement and for joint operation as hereinbefore set forth.

3. The chambers Anand-B, provided with batiie-plates or Vertical `partitions dye, inlet f, outlet g, and communicating duct c, of the troughE in each chamber, the bucketwheel F in each trough, and a nozzle h arranged over each wheel and connecting with a source of supply of the-ingredients tobevaddedV to the water, as and for the purposes lhereinbefore set forth.

In testimony whereol havehereuntoset this 31st day of October 1899. CHARLES -HERSGHEL KOYL.. Witnesses:

JOHN HILL MORGAN,

PHILIP EARL DUDLEY.

my hand 

